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According to the recall, “deposits” can form “on components within the brake system if the DOT 4 brake fluid is not replaced for a prolonged period of time beyond the two-year maintenance schedule.” If a motorcycle’s front or rear brake pedal feels “hard” (or cannot be activated at all) at startup or after an ABS event, it may already be affected by deposits in the bike’s antilock braking system.

Over 40 complaints — including three crashes and two injuries — gave cause to the NHTSA to pressure Harley-Davidson to declare a national recall. The agency had been investigating complaints about the problem since summer 2016.

Harley-Davidson dealers will flush the brakes of every motorcycle covered by the recall and replace the fluid with Platinum Label DOT 4 brake fluid, according to the recall, at no cost to the owner. Recalls are scheduled to begin Feb. 12; owners are urged to contact Harley-Davidson customer service with questions.